Mathematical instructional aide device



FIG. 1 is a front, top respective view of a mathematical instruction aide device showing the new design;

FIG. 2 is a reduced top plan view thereof;

FIG. 3 is a reduced front elevational view thereof; and,

FIG. 4 is a reduced left side elevational view thereof. 

The ornamental design for mathematical instructional aide device, as shown and described. 